diff --git a/src/main/java/me/aski/catalogueservice/Application.java b/src/main/java/me/aski/catalogueservice/Application.java
deleted file mode 100644
index 104fdea..0000000
--- a/src/main/java/me/aski/catalogueservice/Application.java
+++ /dev/null
@@ -1,14 +0,0 @@
-package me.aski.catalogueservice;
-
-import org.springframework.boot.SpringApplication;
-import org.springframework.boot.autoconfigure.SpringBootApplication;
-
-@SpringBootApplication
-public class Application {
-
-    public static void main(String[] args) {
-        SpringApplication.run(Application.class, args);
-    }
-
-}
-
diff --git a/src/main/java/me/aski/catalogueservice/CatalogueServiceApplication.java b/src/main/java/me/aski/catalogueservice/CatalogueServiceApplication.java
new file mode 100644
index 0000000..bca034c
--- /dev/null
+++ b/src/main/java/me/aski/catalogueservice/CatalogueServiceApplication.java
@@ -0,0 +1,35 @@
+package me.aski.catalogueservice;
+
+import me.aski.catalogueservice.dao.CategoryRepository;
+import me.aski.catalogueservice.dao.ProductRepository;
+import me.aski.catalogueservice.entities.Category;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+
+import java.util.ArrayList;
+import java.util.stream.Stream;
+
+@SpringBootApplication
+public class CatalogueServiceApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(CatalogueServiceApplication.class, args);
+    }
+
+    @Bean
+    CommandLineRunner start(CategoryRepository categoryRepository, ProductRepository productRepository) {
+        return args -> {
+
+            categoryRepository.deleteAll();
+            Stream.of("C1 Ordinateur", "C2 Imprimantes").forEach(c -> {
+                categoryRepository.save(new Category(c.split(" ")[0], c.split(" ")[1], new ArrayList<>()));
+
+            });
+            categoryRepository.findAll().forEach(System.out::println);
+
+        };
+    }
+}
+
diff --git a/src/main/java/me/aski/catalogueservice/dao/CategoryRepository.java b/src/main/java/me/aski/catalogueservice/dao/CategoryRepository.java
new file mode 100644
index 0000000..96b340a
--- /dev/null
+++ b/src/main/java/me/aski/catalogueservice/dao/CategoryRepository.java
@@ -0,0 +1,9 @@
+package me.aski.catalogueservice.dao;
+
+import me.aski.catalogueservice.entities.Category;
+import org.springframework.data.mongodb.repository.MongoRepository;
+import org.springframework.data.rest.core.annotation.RepositoryRestResource;
+
+@RepositoryRestResource
+public interface CategoryRepository extends MongoRepository<Category, String> {
+}
diff --git a/src/main/java/me/aski/catalogueservice/dao/ProductRepository.java b/src/main/java/me/aski/catalogueservice/dao/ProductRepository.java
new file mode 100644
index 0000000..7dc764a
--- /dev/null
+++ b/src/main/java/me/aski/catalogueservice/dao/ProductRepository.java
@@ -0,0 +1,8 @@
+package me.aski.catalogueservice.dao;
+
+import org.springframework.data.mongodb.repository.MongoRepository;
+import org.springframework.data.rest.core.annotation.RepositoryRestResource;
+
+@RepositoryRestResource
+public interface ProductRepository extends MongoRepository<Process, String> {
+}
diff --git a/src/main/java/me/aski/catalogueservice/entities/Category.java b/src/main/java/me/aski/catalogueservice/entities/Category.java
new file mode 100644
index 0000000..e596654
--- /dev/null
+++ b/src/main/java/me/aski/catalogueservice/entities/Category.java
@@ -0,0 +1,25 @@
+package me.aski.catalogueservice.entities;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.mongodb.core.mapping.DBRef;
+import org.springframework.data.mongodb.core.mapping.Document;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+@Document
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+@ToString
+public class Category {
+    @Id
+    private String id;
+    private String name;
+    @DBRef
+    private Collection<Product> products = new ArrayList<>();
+}
diff --git a/src/main/java/me/aski/catalogueservice/entities/Product.java b/src/main/java/me/aski/catalogueservice/entities/Product.java
new file mode 100644
index 0000000..298c056
--- /dev/null
+++ b/src/main/java/me/aski/catalogueservice/entities/Product.java
@@ -0,0 +1,23 @@
+package me.aski.catalogueservice.entities;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.mongodb.core.mapping.DBRef;
+import org.springframework.data.mongodb.core.mapping.Document;
+
+@Document
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+@ToString
+public class Product {
+    @Id
+    private String id;
+    private String name;
+    private double price;
+    @DBRef
+    private Category category;
+}
diff --git a/src/test/java/me/aski/catalogueservice/ApplicationTests.java b/src/test/java/me/aski/catalogueservice/CatalogueServiceApplicationTests.java
similarity index 86%
rename from src/test/java/me/aski/catalogueservice/ApplicationTests.java
rename to src/test/java/me/aski/catalogueservice/CatalogueServiceApplicationTests.java
index 50e8763..f594da2 100644
--- a/src/test/java/me/aski/catalogueservice/ApplicationTests.java
+++ b/src/test/java/me/aski/catalogueservice/CatalogueServiceApplicationTests.java
@@ -7,7 +7,7 @@ import org.springframework.test.context.junit4.SpringRunner;
 
 @RunWith(SpringRunner.class)
 @SpringBootTest
-public class ApplicationTests {
+public class CatalogueServiceApplicationTests {
 
     @Test
     public void contextLoads() {